Apparatus for charging a film on the internal surface of a drum

Details Apparatus for charging a film on the internal surface of a drum Apparatus for charging a film on the internal surface of a drum

1996-03-28

1996-12-24

Berman, Jack I.

Radiant energy

Corona irradiation

Charging of moving object

250324, 250326, 361229, 355224, H01T 1904

Patent

active

055875840

ABSTRACT:
A scorotron charging unit for charging Verde film residing on the inner surface of an imagesetter drum has a charging region that encompasses a 270.degree. sector of the drum. The scorotron is fashioned by attaching a metallic strip coronode having a sawtooth edge around a section of pipe. Each tooth of the sawtooth strip is bent to an angle of about 90.degree. with respect to the surface of the pipe. This pipe is slipped inside another pipe that includes a slit for the passage of ions in the direction of the Verde film, thus forming a scorotron. The scorotron while sliding through the drum holding this film, charges the film to sensitize it for imaging.

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